The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2013
Filed:
May. 28, 2010
Masatoshi Kato, Kobe, JP;
Masatoshi Kato, Kobe, JP;
SRI Sports Limited, Kobe, JP;
Abstract
A shaftincludes a textile layer. The textile layer has a biaxial textilecomposed of warps and wefts. The warp is oriented substantially parallel to an axial direction of the shaft. The weft is oriented substantially perpendicularly to the axial direction of the shaft. When a tensile elastic modulus of the warp is defined as ET (tf/mm) and a tensile elastic modulus of the weft is defined as EY (tf/mm), the tensile elastic modulus ET is smaller than the tensile elastic modulus EY. Preferably, the warp is a PAN carbon fiber and the weft is a pitch carbon fiber. Preferably, when a tensile strength of the warp is defined as ST (kgf/mm) and a tensile strength of the weft is defined as SY (kgf/mm), the tensile strength ST is greater than the tensile strength SY.